Former Vice President Joe Biden lashed out at President Trump’s personal attorney Rudy Giuliani on Tuesday over his threat to to travel to Ukraine in order to pressure authorities in that country to investigate he and his son, Hunter Biden.

In an interview with New Hampshire’s WMUR, Biden called Giuliani’s investigative threats “inappropriate.”

“It’s sort of Giuliani’s style and this administration,” said Biden, a leading contender for the Democratic presidential nomination. “It is inappropriate. Unrelated to me, it’s just inappropriate to send your lawyer to a foreign government to try to get them to do something that has no bearing except to try to embarrass.”